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In addition, the heart API is extended with the following functions:
* heart:set_options/1
* heart:get_options/0
If heart:set_options([scheduler]) is set, heart will check
scheduler responsiveness before every heartbeat to the heart port.
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Before a heartbeat to the port program a responsiveness check of
the schedulers is performed. If the responsiveness check fails,
stalls, the heartbeat will not be performed (as intended).
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This commit implements erts_internal:system_check(schedulers) with the
intent of a basic responsiveness test check of the schedulers.
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* heart:set_callback/2
* heart:get_callback/0
* heart:clear_callback/0
The callback is called before every heartbeat to the heart port.
The callback needs to return 'ok' if the validation is correct.
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* bjorn/asn1/suppressions/OTP-13324:
asn1: Suppress warnings for improper lists in generated code
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* dgud/mnesia/del_schema_hangs/OTP-13284:
mnesia: let loader check if tablelock is needed
mnesia: Avoid deadlock possibility in mnesia:del_table_copy schema
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* egil/fix-lcnt-dead-code/OTP-13319:
tools: Remove dead code in lcnt
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* bjorn/compiler/beam_bsm/OTP-13309:
Eliminate crash because of unsafe delaying of sub-binary creation
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* nybek/speed_up_supervisor_count_children:
Speed up supervisor:count_children/1; simple_one_for_one
Add supervisor:get_callback_module/1
OTP-13290
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* hb/dialyzer/fix_bitstr_bug/OTP-13312:
dialyzer: Correct byte_size() and comparisons
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move_table_copy needs the lock that was set previously in del_table_copy.
This doesn't work on old nodes, so bump protocol version and check it.
Remove old protocol conversion code, which have been around since OTP-R15.
Checking if lock is needed requires rpc communication via mnesia_gvar
ets table to be backwards compatible.
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The argument of byte_size() is a bitstring().
The code in erl_bif_types that finds cases where comparisons always
return true or false is corrected when it comes to maps and bit
strings.
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OTP-13311
* sverk/ecc-fixes:
Ensure testing ssl with supported ciphers only
Only use supported EC curves in crypto tests
Check the result of EC_GROUP_new_curve_* calls
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* sverk/hipe-line-table-bug/OTP-13282:
erts: Fix bug concerning line information for hipe modules
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* sverk/proc-exiting-timer-race/OTP-13245:
erts: Fix race between receive timeout and exit signal
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* ia/ssl/handshake-fragmentation/OTP-13306:
ssl: Big handshake messages needs to be fragmented on TLS record level
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* hb/dialyzer/fix_plt_remove/OTP-13103:
dialyzer: Fix a bug concerning the option 'plt_remove'
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[James Fish:]
Dialyzer always asserts that files and directories passed in its
options exist. Therefore it is not possible to remove a beam/module
from a PLT when the beam file no longer exists. Dialyzer should not to
check files exist on disk when removing from the PLT.
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* hb/tools/fix_bc_bug/OTP-13277:
tools: Correct a Cover test
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* anders/diameter/appup/OTP-13283:
Add missing appup after 17.5.6.8 merge
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The following code would fail to compile:
decode(<<Code/integer, Bin/binary>>) ->
<<C1/integer, B1/binary>> = Bin,
case C1 of
X when X =:= 1 orelse X =:= 2 ->
Bin2 = <<>>;
_ ->
Bin2 = B1
end,
case Code of
1 -> decode(Bin2);
_ -> Bin2
end.
The error message would be:
t: function decode/1+28:
Internal consistency check failed - please report this bug.
Instruction: return
Error: {match_context,{x,0}}:
The beam_bsm pass would delay the creation of a sub-binary when it was
unsafe to do so. The culprit was the btb_follow_branch/3 function that
for performance reasons cached labels that had already been checked.
The problem was the safety of a label also depends on the contents
of the registers. Therefore, the key for caching needs to be both
the label and the register contents.
Reported-by: José Valim
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del_table_copy grabs a write lock in a new process in prepare_op/3 to
change 'where_to_read' when a table copy is updated.
When del_table_copy(schema, Node) is called all copies located on Node
are deleted, and thus many locks are taken. Since this was done outside
of the schema-transaction, mnesia's deadlock prevention algorithms
was sidestepped and a deadlock could occur.
Fix by always grabbing write-locks for all changed tabs early and in the same
transaction, this might slow done the operation some but it must be done
and it also cleans up the code.
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* ia/ssl/validator:
ssl: Only start a new session validator if the old one has finished its work
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* tnt-dev/fix-function-index-sort:
Don't sort function index when it's not necessary
OTP-13302
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* binarin/epmd-race:
Prevent down nodes going undetected in epmd
OTP-13301
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* legoscia/tls-dist-listen-ip:
TLS distribution: bind erts socket to localhost
OTP-13300
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* legoscia/patch-3:
Fix documentation of net_kernel:allow/1
OTP-13299
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* lukas/erts/enomem_no_abort/OTP-13292:
erts: When erts_alloc fails, the emulator no longer aborts
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* rj/release-handler-noproc-fix:
Fix noproc crash during release installation
OTP-13291
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Speed up supervisor:count_children/1 for simple_one_for_one
supervisors. This is achieved by avoiding looping through all the
child process and verifying that each one is alive.
For a supervisor with 100,000 'temporary' children the count-time will
drop from approx 25ms to about 0.005ms.
For a supervisor with 100,000 'permanent' or 'transient' children the
count-time will drop from approx 30ms to about 0.005ms.
This avoids having the supervisor block for an extended period while
the count takes place. Under normal circumstances the accuracy of the
result should also improve since the duration is too short for many
processes to die during the count.
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This function is used by release_handler during upgrade. This was
earlier implemented in the release_handler, but it required a copy og
the definition of the supervisor's internal state, which caused
problems when this state was updated.
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* hb/tools/fix_bc_bug/OTP-13277:
tools: Add a Cover test
tools: Fix wrong instrumentation of binary comprehensions
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When cover instruments binary comprehensions it's generating a
{block, ...} abstract code term inside a {bc, ...} term that is causing
the evaluation to fail at runtime. Removing the block statement
eliminates the error.
The template of a bit string comprehension cannot have a counter since
it is not allowed to be a block.
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* rickard/monotonic-time-improvements/OTP-13222:
Use nano second time unit in tracing
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